Author misreads complexity theory
Many argue the polynomial/exponential split reflects real problem structure, and that galactic algorithms and huge constants are standard and irrelevant to asymptotic results.
Big-O is useful despite flaws
Critics of complexity analysis never offer a replacement; it composes nicely and works as a heuristic, even if practical performance needs separate attention.
Thresholds and practicality still matter
Some say the brute-force-below-astronomic-threshold detail deserves clarity and further study, and that combining polynomial algorithms can produce impractical degrees.